MC9S12XS128驱动LEDP10显示屏

#include "derivative.h"

#define B PORTA_PA0 //数据串行输入时钟

#define C PORTA_PA2 //数据输出时钟

#define D PORTA_PA4 //74LS138使能时钟

#define A PORTA_PA1 //行选

#define CP PORTA_PA5 //行选

#define SC PORTA_PA6 //行选

#define RI PORTA_PA3 //串行数据

#define CT PORTA_PA7

#define DIR DDRA //数据方向

#define BUS_CLOCK 32000000 //总线频率

unsigned char ziku[4][32]={

0xFB,0xBF,0xFB,0xBF,0xC0,0x03,0xFB,0xBF,0xFB,0xBF,0x80,0x01,0xFB,0xBF,0xF7,0xDF,

0xEE,0xEF,0xDE,0xF7,0x3E,0xF9,0xEE,0xAF,0xEE,0xD7,0xDE,0xD7,0xFA,0xFF,0xFD,0xFF,

0xFE,0xFF,0x80,0x03,0xFE,0xFF,0xC0,0x07,0xFF,0xFF,0xE0,0x0F,0xEF,0xEF,0xE0,0x0F,

0xFB,0xBF,0x00,0x01,0xFF,0xFF,0xE0,0x0F,0xEF,0xEF,0xEF,0xEF,0xE0,0x0F,0xFF,0xFF,

0xFD,0xFF,0xDD,0xBF,0xDD,0xCF,0xDD,0xEF,0x80,0x01,0xDB,0xFF,0xFB,0xFF,0xF8,0x1F,

0xF3,0xDF,0xF5,0xDF,0xF5,0xDF,0xEE,0xBF,0xDF,0x7F,0xBE,0x9F,0x79,0xE3,0xE7,0xF7,

0xFF,0xF7,0x81,0xF7,0xBD,0xF7,0xB5,0xF7,0xB5,0x01,0xB5,0xE7,0xB5,0xE7,0xB5,0xD7,

0xB5,0xD7,0xB5,0xB7,0xF7,0xB7,0xEB,0x77,0xED,0xF7,0xDC,0xF7,0xBD,0xD7,0x7F,0xEF

};

void init();

void shuru(unsigned char data);

void shuchu();

void delay(unsigned char p);

void hangxuan(unsigned char P);

void timer_init();

void shuru1();

void INIT_PLL(void);

unsigned char hang=0,zi=0,shu=0;

void main(void)

{

init();

INIT_PLL();

timer_init();

while(1)

{

for(hang=0;hang<16;hang++)

{

for(zi=0;zi<4;zi++)

{

shuru(ziku[zi][2*hang]);

shuru(ziku[zi][2*hang+1]);

}

shuru1();

hangxuan(hang);

shuchu();

}

}

}

void shuru(unsigned char data)

{

unsigned char j=0;

for(j=0;j<8;j++)

{

RI=((data

CP=0;

asm NOP;

CP=1;

asm NOP;

}

}

void shuru1()

{

unsigned char j=0;

for(j=0;j

{

if(j<64)

{

RI=1;

CP=0;

asm NOP;

CP=1;

asm NOP;

}

else

{

RI=((ziku[(j-64)/16][2*hang+((j)>7? 1:0)]<(j%8))&0x80)==0x80? 1:0;

CP=0;

asm NOP;

CP=1;

asm NOP;

}

}

}

void shuchu()

{

SC=0;

asm NOP;

SC=1;

asm NOP;

}

void hangxuan(unsigned char P)

{

A=P&0x01;

B=(P>>1)&0x01;

C=(P>>2)&0X01;

D=(P>>3)&0X01;

CT=1;

}

void init()

{

DisableInterrupts;

SC=0;

CP=0;

A=0;

B=0;

C=0;

D=0;

RI=0;

CT=1;

DIR=0XFF;

EnableInterrupts;

}

void INIT_PLL(void)

{

CLKSEL &= 0x7f; //set OSCCLK as sysclk

PLLCTL &= 0x8F; //Disable PLL circuit

CRGINT &= 0xDF;

#if(BUS_CLOCK == 40000000)

SYNR = 0x44;

#elif(BUS_CLOCK == 32000000)

SYNR = 0x43;

#elif(BUS_CLOCK == 24000000)

SYNR = 0x42;

#endif

REFDV = 0x81; //PLLCLK=2×OSCCLK×(SYNdiv+1)/(REFdiv+1)＝64MHz ,fbus=32M

PLLCTL =PLLCTL|0x70; //Enable PLL circuit

asm NOP;

asm NOP;

while(!(CRGFLG&0x08)); //PLLCLK is Locked already

CLKSEL |= 0x80; //set PLLCLK as sysclk

}

void timer_init()

{

//CLKSEL &= 0x7f; //set OSCCLK as sysclk

TSCR1_PRNT=0;//使能预分频

TSCR2=0x87;//使能溢出中断 128分频

TCNTH=((unsigned int)(-20000))/256; //500ms

TCNTL=((unsigned int)(-20000))%6;

TFLG2_TOF=1; //清除溢出中断标志位

TSCR1_TEN=1; //使能定时器

}

#pragma CODE_SEG __NEAR_SEG NON_BANKED

interrupt void timer()

{

TFLG2_TOF=1; //清除溢出中断标志位

TCNTH=((unsigned int)(-20000))/256; //500ms

TCNTL=((unsigned int)(-20000))%6;

shu++;

if(shu==128)

{

shu=0;

}

}